| AF (7 patients) | AVNRT (7 patients) | |||||
| AF pre | AF post | p Value | AVNRT pre | AVNRT post | p Value | |
| RR (ms) | 831.32 ± 175.80 | 752.86 ± 199.88 | 0.14 | 600.65 ± 134.76 | 661.44 ± 178.04 | 0.082 |
| SDNN (ms) | 21.27 ± 9.43 | 11.59 ± 6.56 | 0.036 | 29.16 ± 8.57 | 33.59 ± 16.83 | 0.962 |
| RMSSD (ms) | 18.51 ± 12.36 | 11.44 ± 8.91 | 0.21 | 22.83 ± 11.79 | 18.86 ± 10.97 | 0.198 |
| Triangular index (ms) | 66.45 ± 18.86 | 43.73 ± 12.01 | 0.014 | 85.09 ± 14.09 | 90.61 ± 38.06 | 0.418 |
| LF (ms2) | 42.55 ± 44.37 | 13.72 ± 18.87 | 0.033 | 137.34 ± 63.69 | 214.64 ± 159.25 | 0.675 |
| HF (ms2) | 41.77 ± 39.60 | 14.57 ± 18.86 | 0.005 | 71.31 ± 30.31 | 72.18 ± 51.46 | 0.228 |
AF, atrial fibrillation; AVNRT, atrioventricular nodal re-entrant tachycardia; HF, high frequency; LF, low frequency; RMSSD, root mean square of successive differences; SDNN, standard deviation normal to normal.